Minnesota Vikings running back Adrian Peterson, left, hugs Carolina Panthers quarterback Cam Newton following a 35-10 Panthers win in Minneapolis, Sunday. One of Peterson's sons, a 2-year-old in South Dakota, died Friday after an alleged attack in a child abuse case. (Michael Conroy/AP)

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Adrian Peterson and Frank Alexander

Minnesota Vikings running back Adrian Peterson, right, and Carolina Panthers defensive end Frank Alexander meet following a game in Minneapolis, Sunday. The Panthers defeated the Vikings 35-10. (Michael Conroy/AP)

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Minnesota Vikings fans

Minnesota Vikings fans hold a sign supporting Vikings running back Adrian Peterson during the second half in Minneapolis, Sunday. One of the star running back's sons, a 2-year-old in South Dakota, died Friday after an alleged attack in a child abuse case. The Carolina Panthers defeated the Vikings 35-10. (Jim Mone/AP)

Minnesota Vikings head coach Leslie Frazier and running back Adrian Peterson (28) watch from the sidelines during the first half against the Carolina Panthers in Minneapolis, Sunday. (Ann Heisenfelt/AP)

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Adrian Peterson and Kyle Rudolph

Minnesota Vikings running back Adrian Peterson, right, joins tight end Kyle Rudolph for a National Anthem in Minneapolis, Sunday. One of Peterson's sons, a 2-year-old in South Dakota, died Friday after an alleged attack in a child abuse case.(Jim Mone/AP)

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Adrian Peterson

Minnesota Vikings running back Adrian Peterson pauses during introductions before a game against the Carolina Panthers in Minneapolis, Sunday. One of the star running back's sons, a 2-year-old in South Dakota, died Friday after an alleged attack in a child abuse case. (Michael Conroy/AP)

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Adrian Peterson

Minnesota Vikings running back Adrian Peterson leaves the field during the first half of a game against the Carolina Panthers in Minneapolis, Sunday. One of the star running back's sons, a 2-year-old in South Dakota, died Friday after an alleged attack in a child abuse case.(Ann Heisenfelt/AP)

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Adrian Peterson and Toby Gerhart

Minnesota Vikings running back Toby Gerhart, left, greets teammate Adrian Peterson in Minneapolis, Sunday. One of Peterson's sons, a 2-year-old in South Dakota, died Friday after an alleged attack in a child abuse case. (Ann Heisenfelt/AP)

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Candlelight vigil

Family, friends and well-wishers gather in Sertoma Park in Sioux Falls, S.D., for a candlelight vigil in memory of Minnesota Vikings' Adrian Peterson's 2-year-old son on Friday. Authorities said a 2-year-old boy died Friday of injuries suffered in an alleged child abuse case and a person with knowledge of the situation told The Associated Press the boy was Peterson's son. (Jay Pickthorn/Argus Leader/AP)

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Vanja Srdie

Vanja Srdie shares a memory about Minnesota Vikings' Adrian Peterson's 2-year-old son during a candlelight vigil at Sertoma Park in Sioux Falls, S.D., Friday. Authorities said a 2-year-old boy died Friday of injuries suffered in an alleged child abuse case and a person with knowledge of the situation told The Associated Press the boy was Peterson's son. (Jay Pickthorn/Argus Leader/AP)

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Adrian Peterson

Minnesota Vikings' Adrian Peterson makes his way off an practice field at Winter Park in Eden Prairie, Minn., Friday. Peterson said he is certain he will play Sunday despite a serious personal matter that caused him to miss practice earlier this week. (Elizabeth Flores/The Star Tribune/AP)

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Adrian Peterson

Minnesota Vikings' Adrian Peterson makes his way off a practice field at Winter Park in Eden Prairie, Minn., Friday. Peterson said he is certain he will play Sunday despite a serious personal matter that caused him to miss practice earlier this week. (Elizabeth Flores/The Star Tribune/AP)

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Adrian Peterson

Minnesota Vikings' Adrian Peterson, second from right, makes his way onto a practice field at Winter Park in Eden Prairie, Minn., Friday. Peterson said he is certain he will play Sunday despite a serious personal matter that caused him to miss practice earlier this week. (Elizabeth Flores/The Star Tribune/AP)